How to Set the Moonphase on Your Natty Boh Moon Watch
By Tsao Baltimore | Baltimore Watch Company | Published: 2026-08-19
Category: How-to Guides
Learn to set the moonphase on your Natty Boh Moon watch with this step-by-step guide, including tips for accuracy and care.
The moonphase complication is one of the most poetic features in watchmaking, and the Natty Boh Moon watch brings that celestial charm to your wrist. Whether you're a seasoned collector or new to moonphase watches, setting this complication correctly is essential for both accuracy and enjoyment. In this guide, we'll walk you through the steps to set the moonphase on your Natty Boh Moon, ensuring it tracks the lunar cycle beautifully.
Before diving in, it's important to understand that the moonphase display shows the current phase of the moon as it appears in the sky. The Natty Boh Moon watch features a dedicated subdial that mimics this cycle. Setting it correctly requires knowing the date of the last full moon or new moon, as well as the current moon phase. Don't worry—we'll make it simple.
Understanding the Moonphase Complication
The moonphase complication is a mechanical representation of the lunar month, which lasts about 29.5 days. On the Natty Boh Moon watch, the subdial typically shows a moon disc with two moons, rotating to display the waxing and waning phases. The disc completes one full rotation every 29.5 days, so it's crucial to set it accurately to match the actual moon phase.
Most moonphase watches are set using the crown or a pusher. On the Natty Boh Moon, you'll find a corrector pusher or a crown position that adjusts the moonphase disc. Familiarize yourself with the watch's manual or the markings on the case back to identify the correct method. If you're unsure, the 'Link Adjustment - Walk In' service at Baltimore Watch Company can help, but we'll guide you through the DIY process.
- The moonphase disc completes a cycle every 29.5 days.
- Setting requires knowing the date of the last full moon or new moon.
- Use a corrector pusher or crown position as per the watch's design.
Step-by-Step: Setting the Moonphase
To set the moonphase on your Natty Boh Moon, start by determining the current moon phase. You can find this information online or by observing the moon. For simplicity, use the date of the last new moon as a reference point. For example, if the last new moon was on the 5th and today is the 12th, the moon is 7 days into its cycle, which is the first quarter.
Next, pull the crown to the moonphase setting position (usually the second click) or use the corrector pusher. Advance the moonphase disc until the moon is centered in the display. If you're setting from a new moon, you'll need to advance the disc by the number of days since the new moon. Each click or crown turn typically advances the disc by one day, so count carefully.
Once you've set the moonphase, push the crown back in and ensure it's secure. If your watch has a screw-down crown, tighten it gently. After setting, it's a good idea to synchronize the time and date as well, as some adjustments may affect them. For a complete reset, consider consulting the manual or visiting a professional.
- Find the date of the last new moon to calculate the current phase.
- Advance the moonphase disc by the number of days since the new moon.
- Always push the crown back in securely after adjustment.
Tips for Accuracy and Maintenance
To keep your moonphase accurate, it's recommended to set it during the day when the watch is running. Avoid changing the moonphase between 9 PM and 3 AM, as the date mechanism may be engaged. If you need to adjust during this window, first move the hands to a safe time, like 6 PM, then make the adjustment.
Regular maintenance is key to preserving the function of your moonphase. Like all mechanical watches, the Natty Boh Moon benefits from periodic servicing every 3-5 years. When you send your watch in for service, the technicians will ensure the moonphase mechanism is clean and lubricated. For strap changes or adjustments, consider the 'Epsom Calfskin - Saddle Brown' strap for a classic look, which pairs beautifully with the moonphase dial.

If you're ever in doubt about setting your moonphase, the team at Baltimore Watch Company is always happy to help. You can also explore the 'Legacy Steel GMT - Green Fume' as another example of our intricate complications, but for now, let's focus on your Natty Boh Moon.
- Set the moonphase during the day to avoid date mechanism conflicts.
- Service your watch every 3-5 years to keep the moonphase accurate.
- Pair your watch with a quality strap like the Epsom Calfskin - Saddle Brown for comfort and style.
Setting the moonphase on your Natty Boh Moon watch is a rewarding skill that connects you to the celestial rhythm. With these steps, you can ensure your watch displays the moon accurately, enhancing both its beauty and functionality. If you ever need assistance, Baltimore Watch Company is here to help—explore our collection to find your next timepiece.

