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Natural time is measured in cycles. The Ancient Mayan People have described the cycles of both the universe and nature around us and created a harmonic calendar that is synchronized to all those cycles.

The Tzolkin and 13 Moon Calendar is therefore less of a human invention, but more of a profound insight into the organizational tendencies within nature. Mayan cosmology developed this insight with great ingenuity and sophistication.



Our Gregorian calendar is not synchronized to the natural cycles and thus not aware. The 13 Moon-28-day calendar is a simple tool that helps us to raise our frequency and gives us a new lens to view both our day-to-day and planetary events. It can help you get a stronger connection with the cycles of the cosmic organization of time.

All this is explained carefully in more than 15.000 words and 37 pages!


In the New Time, synchronicity is the norm.



"13:20:Sync makes it so much easier to understand and integrate the calendar into every day life. Highly recommend it."

For the beginner this app is a learning tool because it contains a lot of information about Tones and Seals and the synchronizing order.

"This app is great, and allows easy manipulation of dates. I spent years in books doing in hours what I can now do in seconds."

For the ones who are already familiar with the Mayan Calendar this app is a handy tool to navigate through the cycles, and calculate the (Combined) Kin.
This app can be of great assistance to teach other people about the 13:20 cycles.




Tell me, and I will forget.

Show me, and I may remember.

Involve me, and I will understand.

Hsun Tzu,313 B.C.



■ Kin Calendar
Shows the Kin of today by default.
Calculate the Kin for any other date.

■ Kin Picker
Select any combination of the 13 Tones and 20 Seals.
Top section can scroll to 5 pages with information.

■ Tzolkin
With indication of the GAP day's and Wavespell in Kin Calendar and Kin Picker.

■ 13 Moon Calendar
Full integration of 13 Moon Calendar everywhere a date is displayed.


■ Cosmic Connections
Instantly see the cosmic connection with all your friends. All contacts in your regular Contacts App will be automatically imported and assigned to the correct Kin.

■ Combined Kin
Calculate the Combined Kin of 2 or more people. You can add as many Kin as you like to calculate the Combined Kin for a group of people.

■ 13:20 Info
Over 15.000 words on 37 pages of information about the 13 Tones and 20 Seals and the theory behind synchronization.


Available languages:

English, Bulgarian,
French, German,
Italian, Japanese,
Portuguese, Russian,
Simp.Chinese, Spanish


Based on the work of José Argüelles.
Law of Time Logo


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