Ekasana pachkan means a vow to eat only one meal a day, in one sitting, during the daylight hours, with discipline and non-violence. It sets a single-meal limit and emphasizes mindful, restrained eating. Different Jain traditions may have slight variations in wording or timing, but the core idea is the same.

• Digambar/Shvetambar note: both traditions observe Ekasana, but exact timings and procedures can differ slightly between them. For example, some traditions emphasize taking the pachkhan in the morning and eating before sunset, while others describe observing the one-meal window more flexibly during the day. ( jainknowledge.com)

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