# I change when to where - another riddle

I managed to write a rhyming one this time!

I sound like a sieve,
But knowledge I give.
I change when to where;
Just find the right square.

A cycle moves me to the right,
But never entirely out of sight.
Seven by four, or usually more,
Betwixt the ceiling and the floor.

What am I?

Sounds like it could be a

Calendar

I sound like a sieve

Maybe a sieve is a grid

But knowledge I give

Calendar can be an external brain for keeping track of everything

I change when to where

As an appointment time approaches, it will tell you where you need to be

A cycle moves me to the right But never entirely out of sight

A cycle of days is a month and as months increase, they normally show a smaller version of the prior and next month. As we imagine a year goes left to right, this may indicate direction.

Seven by four or usually more

28 days in Feb, otherwise 29, 30 or 31

Betwixt the ceiling and the floor

Hangs on the wall.

From the comments on where I was a little off -

A "sieve" is like a colander, which sounds like calendar. "When to where" is supposed to mean that 'which day?' when you're looking on a calendar becomes a spatial question rather than a temporal one. A "cycle" is supposed to mean a day; as each day passes (unless it's the end of the week) you move one square to the right on the calendar. – rand al'thor

• The cycle part is not 100% convincing, otherwise nice one! I find especially clever the seven by four and the when to where. – clabacchio Nov 19 '14 at 12:51
• Well done! This was the answer I was looking for. Not all the interpretations were quite what I intended though. – Rand al'Thor Nov 19 '14 at 12:56
• A "sieve" is like a colander, which sounds like calendar. "When to where" is supposed to mean that 'which day?' when you're looking on a calendar becomes a spatial question rather than a temporal one. A "cycle" is supposed to mean a day; as each day passes (unless it's the end of the week) you move one square to the right on the calendar. – Rand al'Thor Nov 19 '14 at 12:57
• @randal'thor colander, ah! Makes sense. I kept thinking "sifter". – Raystafarian Nov 19 '14 at 12:58
• Feel free to suggest improvements to the question; we were just talking about this over at the Green Llama! – Rand al'Thor Nov 19 '14 at 12:59

The blackboard

I sound like a sieve,

For the sound of the chalk

But knowledge I give.

I'm used for teaching

I change when to where; Just find the right square.

The tool to wipe

A cycle moves me to the right, But never entirely out of sight.

Less clear to me, but perhaps it refers to those that can be swapped

Seven by four, or usually more,

Feet?

Betwixt the ceiling and the floor

Usually hanging on the wall

• This looks like the one. For me even A cycle moves me to the right, But never entirely out of sight makes sense with your answer. – Mohit Jain Nov 19 '14 at 12:47
• @MohitJain my doubt comes from the fact that not all *** are of the scrolling type – clabacchio Nov 19 '14 at 12:49

I think you are

A compass

I sound like a sieve,

used to distinguish directions (North, East, West, South).

But knowledge I give.

give knowledge about locations and how to reach a place.

I change when to where;

is used to find the answer for 'where?'. That is, to find locations.

Just find the right square.

To decide in which direction the squire map is to be held in an exploration or journey.

A cycle moves me to the right,

Circular rotation of the needle.

But never entirely out of sight.

will always be kept in the pocket or hand

• I don't follow your reasoning for 'sieve'. Also what about the last two lines? – Rand al'Thor Nov 19 '14 at 13:13