What is the significance of the numbers used for episode names in The Promised Neverland (Yakusoku no Neverland) The episode thus far have been:

1. 121045
2. 131045
3. 181045
4. 291045
5. 301045
6. 311045

At first I didn't give them much though as they appear to be number similar to what is tatoo'd on the children`s necks so I assumed that is what they were, possibly signifying that an episode is about a certain character. However the number do not appear to match any of the characters. On closer inspection the current numbers are the same except for the first two numbers that changes. At a quick glance they appear to be dates... is that what they are? The day on which the episode occurs

Which would imply the story probably takes place in October of the year 2045?

The episodes in The Promised Neverland (Yakusoku no Neverland) thus far have been:

1. 121045
2. 131045
3. 181045
4. 291045
5. 301045
6. 311045

At first, I didn't give them much thought as they appear to be a number similar to what is tattooed on the children's necks, so I assumed that is what they were, possibly signifying that an episode is about a certain character. However, the number does not appear to match any of the characters. On closer inspection, the current numbers are the same except for the first two numbers that change. 

At a quick glance, they appear to be dates... is that what they are? The day on which the episode occurs

which would imply the story probably takes place in October of the year 2045?

What is the significance of the numbers used for episode names?